CN214231551U

CN214231551U - Anastomotic stoma protection component based on magnetic particles

Info

Publication number: CN214231551U
Application number: CN202022714356.5U
Authority: CN
Inventors: 单腾; 陈望东; 曹元阳
Original assignee: Suzhou Tianchen International Medical Technology Co Ltd
Current assignee: Touchstone International Medical Science Co Ltd; Suzhou Tianchen International Medical Technology Co Ltd
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-09-21
Anticipated expiration: 2030-11-20

Abstract

The utility model provides an anastomotic stoma protection component based on magnetic particles, which comprises a protective sleeve, a protective sleeve and a protective sleeve, wherein the protective sleeve is positioned in the tubular tissue and corresponds to the anastomotic stoma; the first fixing component is arranged on the outer wall of the tubular tissue and is provided with at least one first suction part; the second fixing part is arranged on the inner surface of the protective sleeve and corresponds to the first fixing part, and the second fixing part is provided with at least one second suction part; the first attraction part and the second attraction part are mutually fixed through magnetic attraction, and magnetic particles are distributed in at least one first attraction part and/or at least one second attraction part. The utility model discloses an increase magnetic particle in fixed part for can the magnetic attraction and fixed protective sheath between the fixed part, and can provide sufficient circumference flexible space for the tubulose tissue.

Description

Anastomotic stoma protection component based on magnetic particles

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to identical mouthful protection subassembly based on magnetic particle.

Background

After the intestinal tract is cut and sutured, the anastomotic orifice is generally required to be protected in order to avoid applying tension to the anastomotic orifice by excrement or avoiding infection of the anastomotic orifice caused by the excrement polluting the anastomotic orifice.

The existing anastomotic stoma protection mode is generally as follows: the tubular sleeve is arranged inside the intestinal tract, the inner surface of the intestinal tract is covered by the sleeve, the position corresponding to the anastomotic stoma is covered by the sleeve, and excrement is drained out of the human body through the sleeve, so that the anastomotic stoma can be effectively protected, secondary operation is not needed after the physiological tissue of the anastomotic stoma grows well, and the sleeve can be directly taken out. In order to better fix the sleeve in the desired position, it is necessary to provide a fixation band having a fixed diameter on the outside of the sleeve and configured to position around the intestine. However, the fixing band inevitably generates a certain pressure on the intestinal tract, which may hinder the normal peristalsis of the intestinal tract, and may cause poor blood supply near the anastomotic orifice due to the continuous pressure of the fixing band.

SUMMERY OF THE UTILITY MODEL

To the problem among the prior art, the utility model aims to provide an coincide mouthful protection subassembly based on magnetic particle through increase magnetic particle in fixed part for can the magnetic attraction and fixed protective sheath between the fixed part, and can provide sufficient circumference flexible space for the tubulose tissue.

The embodiment of the utility model provides an coincide mouthful protection subassembly based on magnetic particle for the protection of the coincide mouthful of tubulose tissue, the subassembly includes:

the protective sleeve is positioned in the tubular tissue at a position corresponding to the anastomotic stoma;

the first fixing component is arranged on the outer wall of the tubular tissue and is provided with at least one first suction part;

the second fixing part is arranged on the inner surface of the protective sleeve and corresponds to the first fixing part, and the second fixing part is provided with at least one second suction part;

the first attraction part and the second attraction part are mutually fixed through magnetic attraction, and magnetic particles are distributed in at least one first attraction part and/or at least one second attraction part.

In some embodiments, the first attraction portion and the second attraction portion are distributed with magnetic particles, the magnetic particles in the first attraction portion are the same in magnetism, the magnetic particles in the second attraction portion are the same in magnetism, and the magnetic particles in the first attraction portion and the magnetic particles in the second attraction portion are opposite in magnetism.

In some embodiments, the position of the first attraction part corresponds to the position of the second attraction part, and a corresponding group of the first attraction part and the second attraction part are both magnetic, or one of the first attraction part and the second attraction part is magnetic, and the other of the first attraction part and the second attraction part is not magnetic and can be attracted magnetically.

In some embodiments, the first fixing member includes a plurality of the first suction portions, the first suction portions being disposed at intervals from each other and distributed along a circumferential direction of the tubular tissue;

the second fixing member includes a plurality of the second suction portions, and the second suction portions correspond to the first suction portions.

In some embodiments, the first suction part includes a first fixed block, a surface of which is coated with a first magnetic particle coating layer or an interior of which is doped with magnetic particles.

In some embodiments, the first fixation element further comprises a first connector carrying the first fixation block, the first connector encircling an outer wall of the tubular tissue, the first connector being circumferentially retractable.

In some embodiments, the first fixation element comprises a first connector surrounding the outer wall of the tubular tissue, the first connector having the first attraction portion disposed therein, the first attraction portion having a surface coated with a third magnetic particle coating or having magnetic particle doping within the first connector.

In some embodiments, the first connector is provided with a connecting structure, where the first connector can be connected to encircle the outer wall of the tubular tissue or disconnected to disengage from the outer wall of the tubular tissue.

In some embodiments, the first connector is of a bioabsorbable material.

In some embodiments, the second attraction includes a second magnetic particle coating applied to an inner surface of the protective sheath.

In some embodiments, the second attraction portion includes a second fixed block, a surface of which is coated with a second magnetic particle coating or an interior of which is doped with magnetic particles.

In some embodiments, the second fixing member further comprises a second connector carrying the second fixing block, the second connector being located on an inner surface of the protective sheath.

In some embodiments, the second fixing component comprises a second connector located on the outer wall of the tubular tissue, the second connector is provided with the second attraction part, the surface of the second attraction part is coated with a fourth magnetic particle coating or the interior of the second connector is doped with magnetic particles.

In some embodiments, the second connector is of a bioabsorbable material.

In some embodiments, the first and second fixation components are located on an upstream side of the stoma.

In some embodiments, an end of the protective sheath upstream of the stoma is provided with a support portion that is retractable in a radial direction of the protective sheath, the first and second fixation components being disposed between the stoma and the support portion.

In some embodiments, two of the first and second fixation components are included, one of the first and second fixation components being disposed on an upstream side of the stoma, and the other of the first and second fixation components being disposed on a downstream side of the stoma.

In some embodiments, the first fixing part comprises at least one first fixing block, and/or the second fixing part comprises at least one second fixing block;

at least one first fixing block and/or at least one second fixing block are made of a bioabsorbable material.

In some embodiments, at least one of the first fixation block and/or at least one of the second fixation block is made of a bioabsorbable magnetic material.

In some embodiments, the first fixing part comprises at least one first fixing block and a first connecting piece carrying the first fixing block; and/or the second fixing part comprises at least one second fixing block and a second connecting piece for bearing the second fixing block;

at least part of the circumferential direction of the first fixed block is provided with a fixed block mounting groove, the inner periphery of the first connecting piece is embedded with the fixed block mounting groove, or at least part of the inner periphery of the first connecting piece is provided with a fixed block mounting groove, and the first fixed block is embedded with the fixed block mounting groove;

the circumference of the second fixed block is at least partially provided with a fixed block mounting groove, the inner periphery of the second connecting piece is embedded with the fixed block mounting groove, or the inner periphery of the second connecting piece is at least partially provided with a fixed block mounting groove, and the second fixed block is embedded with the fixed block mounting groove.

The utility model provides an identical mouthful protection component based on magnetic particle has following advantage:

the utility model protects the inner surface of the anastomotic stoma through the protective sleeve, the tubular tissue content is guided to pass through without polluting the anastomotic stoma, and the magnetic particles are distributed on the first suction part and/or the second suction part, so that the magnetic adsorption can be realized between the first suction part and the second suction part, and the protective sleeve is fixed at the required position; only the magnetic adsorption position between the first attraction part and the second attraction part in the assembly is relatively fixed, a circumferentially sufficient telescopic space is provided for tubular tissues, and when contents exist in the tissues or the tissues creep per se, normal blood supply near an anastomotic stoma is guaranteed. The utility model discloses an identical mouthful of tubular tissue that protection component used can be the intestinal, also can be other tubular tissues in the human body, for example the tubular tissue of other positions in the alimentary canal etc..

Drawings

Other features, objects and advantages of the invention will become more apparent from a reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.

Fig. 1 is a schematic view of an anastomotic stoma protection assembly according to a first embodiment of the invention applied to intestinal tissue;

FIG. 2 is an exploded view of FIG. 1;

fig. 3 is a schematic view of a first fixing member of a first embodiment of the present invention;

fig. 4 is a broken structural schematic view of a first connecting member according to a first embodiment of the present invention;

FIG. 5 is a schematic view of the second fixing member of the first embodiment of the present invention engaged with a protective sheath;

fig. 6 is a front view of a first fixing member according to a first embodiment of the present invention;

fig. 7 is a front view of a second fixing member according to the first embodiment of the present invention;

fig. 8 is a side view of a first fixing element and a second fixing element of a first embodiment of the invention;

fig. 9 is a schematic view of an anastomotic stoma protection assembly according to a second embodiment of the invention applied to intestinal tissue;

FIG. 10 is a schematic view of a second fastening member of a second embodiment of the present invention engaged with a protective sheath;

fig. 11 is a schematic view of an anastomotic stoma protection assembly according to a third embodiment of the invention applied to intestinal tissue;

fig. 12 is a schematic view of an anastomotic stoma protection assembly according to a fourth embodiment of the invention applied to intestinal tissue;

fig. 13 is a schematic view of an anastomotic stoma protecting assembly according to a fifth embodiment of the invention applied to intestinal tissue;

fig. 14 is a schematic view of an anastomotic stoma protection assembly according to a sixth embodiment of the invention applied to intestinal tissue;

fig. 15 is a schematic view of an anastomotic stoma protection assembly according to a seventh embodiment of the invention applied to intestinal tissue;

fig. 16 is a schematic view of a seventh embodiment of the present invention with the first connector broken away;

fig. 17 is a schematic view of an anastomotic stoma protection assembly according to an eighth embodiment of the invention applied to intestinal tissue;

fig. 18 is a schematic view illustrating the application of the anastomotic stoma protecting assembly of the ninth embodiment of the invention to intestinal tissue.

Reference numerals:

1 protective cover 41 first bearing part

11 support 42 first connection

12 concave pit 43 connecting bulge

2 first fixing block 44 connecting groove

21 first fixed block round corner 5 second connecting piece

22 first fixed block mounting groove 51 second bearing part

3 second fixed block 52 second connecting part

31 second fixed block round corner 6 external magnetic particles

32 second fixed block mounting groove 7 internal magnetic particles

4 first connecting piece 9 intestinal tissue

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.

The utility model provides an anastomotic stoma protection component based on magnetic particles for tubular tissue anastomotic stoma protection. The assembly comprises: the protective sleeve is positioned in the tubular tissue at a position corresponding to the anastomotic stoma; the first fixing component is arranged on the outer wall of the tubular tissue and is provided with at least one first suction part; the second fixing part is arranged on the inner surface of the protective sleeve and corresponds to the first fixing part, and the second fixing part is provided with at least one second suction part; the first attraction part and the second attraction part are mutually fixed through magnetic attraction, and magnetic particles are distributed in at least one first attraction part and/or at least one second attraction part.

Magnetic particles are distributed in the first attraction part and/or the second attraction part, and the first fixing part and the second fixing part are relatively fixed through magnetic attraction, so that the protective sleeve is fixed at a required position; only the magnetic adsorption position between the first attraction part and/or the second attraction part in the assembly is relatively fixed, the circumferential length can be elastically stretched, sufficient circumferential stretching space is provided for tissues, and when contents exist in the tissues or the tissues creep, normal blood supply near an anastomotic stoma is guaranteed.

The structure of the magnetic particle-based anastomotic stoma protection assembly according to each embodiment of the present invention will be described in detail below with reference to the accompanying drawings, and it should be understood that each embodiment is not intended to limit the scope of the present invention. In the respective embodiments, the intestinal tract tissue is exemplified. It is understood that in other embodiments, the tubular tissue is not limited to intestinal tissue, but may be other tubular tissue in human body, such as tubular tissue at other positions in digestive tract, etc., and all fall within the protection scope of the present invention.

As shown in fig. 1 to 4, the structure of the magnetic particle-based anastomotic stoma protection component according to the first embodiment of the present invention is schematically illustrated. In this embodiment, the magnetic particle-based stoma protection assembly includes: the protective sleeve 1 is positioned in the intestinal tract assembly 9 and corresponds to the anastomotic stoma, plays a role in protecting the inner surface of the anastomotic stoma, and cannot pollute the anastomotic stoma in the process of guiding intestinal contents to pass through; a first fixing member provided on an outer wall of the intestinal assembly 9; and a second fixing member provided at a position corresponding to the first fixing member on the inner surface of the protective cover 1. The protective sleeve 1 is located in the intestinal tissue 9 and corresponds to the anastomotic stoma, namely two ends of the protective sleeve 1 are respectively located on two sides of the anastomotic stoma to completely cover the anastomotic stoma, and the anastomotic stoma protecting component is attached to the tissue wall of the protected tissue. The protective sleeve 1 has a protection effect on the inner surface of the anastomotic stoma, and does not pollute the anastomotic stoma in the process of guiding the contents in the intestinal tract to pass through.

In order to fix the protective cover 1, the first fixing member includes a first attraction portion, the second fixing member includes a second attraction portion, and the first attraction portion and the second attraction portion are fixed to each other by magnetic attraction. Magnetic particles are distributed in the first attraction part and/or the second attraction part. In order to realize the mutual magnetic attraction of the first attraction part and the second attraction part, the position of the first attraction part corresponds to the position of the second attraction part, and the corresponding group of the first attraction part and the second attraction part are both magnetic or one is magnetic and the other is not magnetic and can be attracted magnetically. The attracting portion having magnetism may be in the form of, for example, a distribution of magnetic particles, or a material having magnetism itself, and a magnetically attractable metal such as iron, nickel, or the like, which is not magnetic but magnetically attractable. In this embodiment, the first magnetic part and the second magnetic part are both distributed with magnetic particles. However, the present invention is not limited to this, in other embodiments, the first magnetic part may also have magnetic particles distributed thereon, the second magnetic part may not have magnetic particles, or the first magnetic part may not have magnetic particles, the second magnetic part may have magnetic particles distributed thereon, or a part of the first magnetic part may have magnetic particles distributed thereon, and a part of the second magnetic part may have magnetic particles distributed thereon, which all fall within the protection scope of the present invention.

As shown in fig. 2, in this embodiment, magnetic particles are distributed in both the first attraction section and the second attraction section, the magnetic particles in the first attraction section are the same in magnetism, the magnetic particles in the second attraction section are the same in magnetism, and the magnetic particles in the first attraction section and the magnetic particles in the second attraction section are opposite in magnetism.

The outer magnetic particles 6 may be applied to the surface of the first magnetic element in the form of a first magnetic particle coating, for example, to the inner surface of the first attraction facing the intestinal assembly 9. The magnetic particles can be made into a magnetic particle coating together with a binder, a solvent and the like, and the magnetic particle coating is coated on the surface of a plastic or metal sheet base. The external magnetic particles 6 may also be formed in the first attraction portion in a form doped with magnetic particles. The inner magnetic particles 7 may be applied to the surface of the second attraction in the form of a second magnetic particle coating, for example to the outer surface of the second attraction facing the protective sheath 1. The magnetic particles can be made into a magnetic particle coating together with a binder, a solvent and the like, and the magnetic particle coating is coated on the surface of a plastic or metal sheet base. The internal magnetic particles 7 may also be formed in the second attraction portion in a form doped with magnetic particles. The utility model discloses a size and the distribution mode of magnetic particle in each view are the example only, and the size of the magnetic particle who adopts in the practical application can be greater than or be less than the example that shows in the picture, and the distribution of magnetic particle can be evenly distributed, also can be inhomogeneous distribution, all belong to within the protection scope of the utility model.

As shown in fig. 1 to 3, the first suction part includes a first fixed block 2, and the second suction part includes a second fixed block 3. The first fixing block 2 is arranged on the outer wall of the intestinal tract tissue 9, the second fixing block 3 is arranged on the inner surface of the protective sleeve 1 and at a position corresponding to the first fixing block 2, and the first fixing block 2 and the second fixing block 3 are relatively fixed through magnetic adsorption, so that the position of the protective sleeve 1 relative to the intestinal tract tissue 9 is maintained through the fixation of the first fixing block 2 and the second fixing block 3.

The first fixing component and the second fixing component are preferably arranged on the upstream side of the anastomotic stoma and are used for fixing the protective sleeve 1, so that the protective sleeve 1 cannot move to the downstream side of the anastomotic stoma and lose the protection of the anastomotic stoma. The utility model discloses in, the upper reaches of coincide mouthful refer to and use the orientation that the intestinal content removed along the intestinal as the reference, and the intestinal content removes along intestinal from the one side of the low reaches of coinciding mouthful of an upper reaches side direction of coinciding mouthful. When the anastomotic stoma protection component is applied to the lower position of the intestinal tract, the protective sleeve 1 guides excrement to be discharged along the intestinal tract and moves from the upstream side of the anastomotic stoma to the downstream side of the anastomotic stoma.

Because only the magnetic adsorption position between the first fixing block 2 and the second fixing block 3 in the assembly is relatively fixed, a sufficient circumferential telescopic space is provided for the intestinal tract, and normal blood supply near the anastomotic stoma is ensured. When the intestinal tract tissue 9 wriggles, the first fixing blocks 2 and the second fixing blocks 3 can move along with the intestinal tract tissue 9 wriggling, the distance between two adjacent first fixing blocks 2 can change, and the distance between two adjacent second fixing blocks 3 can also change, so that the anastomotic stoma protection component integrally forms a circumferential telescopic structure.

In this embodiment, the protective sheath 1 is a tubular protective sheath, as shown in fig. 2, which can provide circumferential protection for the anastomotic orifice. The protective sheath 1 may be a thin-walled flexible film sleeve, such as a rubber film sleeve, a silicone film sleeve, etc., but the present invention is not limited thereto. In other alternative embodiments, the protective sheath 1 may also take other shapes, and cover the inner wall of the anastomotic orifice in whole or in part, all falling within the scope of the present invention.

As shown in fig. 1 and 2, a support portion 11 is provided at an end of the protective sheath 1 upstream of the anastomotic orifice, and the support portion 11 is retractable in a radial direction of the protective sheath 1. Support portion 11 is when the radial direction shrink, inside or taking out from intestinal tissue 9 can wholly be put into to protective sheath 1 after protective sheath 1 places to target in place, support portion 11 expands in the radial direction to form the support to protective sheath 1, realize that protective sheath 1 is better sealed with the laminating of intestinal wall, prevent that the content from getting into anastomotic opening department. The supporting portion 11 can be an annular elastic air bag capable of inflating and deflating, the outer wall of the air bag has elasticity, for example, the outer wall can be made of elastic rubber, silica gel, TPU and the like, or made of thin PC materials, the air bag is attached to a tissue wall after being inflated, when contents pass through the air bag, the circumferential length can be increased, and the air bag can be well attached to an intestinal tract. The support portion 11 may be formed of another radially-retractable spring or a radially-movable slider structure, and the outer diameter of the support portion 11 may be increased or decreased. The first and second fixing components are arranged between the anastomotic stoma and the support portion 11, and the protective casing 1 can be better held in the anastomotic stoma position by cooperation with the support portion 11.

As shown in fig. 2 and 3, the assembly includes a plurality of the first fixing blocks 2 and a plurality of the second fixing blocks 3, and the first fixing blocks 2 and the second fixing blocks 3 are sequentially arranged in the circumferential direction of the intestinal tissue 9, respectively, so as to form a uniform and stable fixation of the protective sheath 1. In this embodiment, a plurality of first fixed blocks 2 are provided with a space therebetween, and a plurality of second fixed blocks 3 are provided with a space therebetween. The quantity of first fixed block 2 and second fixed block 3 also can select the setting as required to can form the one-to-one relation, a to many relation, perhaps many-to-one relation etc. between first fixed block 2 and the second fixed block 3 all belong to within the protection scope of the utility model. In other alternative embodiments, the first fixing block 2 may also be provided as 1 and/or the second fixing block 3 may also be provided as 1.

As shown in fig. 2, the surface of the first fixing block 2 opposite to the intestinal tissue 9 is an arc surface, and the shape of the arc surface substantially conforms to the outer wall of the intestinal tissue 9, so as to achieve better fitting between the first fixing block 2 and the outer wall of the intestinal tissue 9. The surface that the second fixed block 3 with the protective sheath 1 is relative is the arc surface, and the shape on this arc surface basically suits with the internal surface of protective sheath 1 to realize the better laminating of second fixed block 3 and the internal surface of protective sheath 1.

Further, in another alternative embodiment, the surface of the first fixed block 2 and/or the second fixed block 3 may also be wavy. Specifically, the surface of the first fixing block 2 facing the intestinal tract tissue 9 is a wavy surface having a height along the length direction (e.g., S direction in fig. 2) of the intestinal tract tissue 9, so that the surface can better adapt to the outer wall of the intestinal tract tissue 9, the contact area between the first fixing block 2 and the intestinal tract tissue 9 is increased, and the degree of matching between the first fixing block 2 and the outer wall of the intestinal tract tissue 9 is improved. The surface of the second fixing block 3 facing the protective sheath 1 is a wavy surface with a height along the length direction (e.g. S direction in fig. 2) of the intestinal tissue 9, so that the contact area between the second fixing block 3 and the protective sheath 1 is increased, and the degree of matching between the second fixing block 3 and the inner wall of the protective sheath 1 can be improved.

As shown in fig. 2 and 3, the first fixing member further includes a first connecting member 4 for carrying the first fixing block 2, when the first connecting member 4 is installed at the intestinal tract assembly 9, the first connecting member 4 surrounds the outer wall of the intestinal tract tissue 9 to form a connecting ring structure, so as to form a circumferential fixing to the protective sheath 1 together with the first fixing block 2. The first connecting member 4 includes a first bearing portion 41 and a first connecting portion 42. The first bearing portions 41 correspond to the first fixed blocks 2 one to one, and bear the corresponding first fixed blocks 2. The first connecting portion 42 is connected between two adjacent first bearing portions 41. When the first connecting piece 4 surrounds the outer wall of the intestinal tract assembly 9, the first connecting piece 4 is circumferentially telescopic. Further, the first connecting member 4 may be an elastic connecting member, and at least the first connecting portion 42 thereof is elastic. Therefore, when the intestinal tract peristalsis occurs, the first connecting piece 4 can elastically deform along with the peristalsis of the intestinal tract, the limiting pressure cannot be applied to the intestinal tract, and the telescopic movement space is provided for the intestinal tract. For example, the first connecting member 4 may be an elastic connecting member made of rubber, silicon rubber, or the like and having a certain elasticity. The first connector 4 may be disposed in parallel to the support portion 11.

As shown in fig. 4, the first connector 4 may further be provided with a connecting structure, and the first connector 4 may be connected at the connecting structure to surround the outer wall of the intestinal tissue 9, for example, to form a closed loop structure, or disconnected at the connecting structure to be separated from the outer wall of the intestinal tissue 9. I.e. the first connecting member 4 can have two states: closed loop or open shape. The first connecting element 4 can be used in two ways: one way is that the first connector 4 initially is a closed loop, which is broken away from the intestinal tissue 9 at its connection when it is desired to remove it from the intestinal tissue 9; alternatively, the first connector 4 is initially in a non-closed configuration and is arranged to be closed into a loop at the location of the connection after being arranged outside the intestinal tissue 9. The connection structure shown in fig. 4 includes a connection protrusion 43 and a connection groove 44 respectively disposed at two ends, when the connection protrusion 43 is embedded in the connection groove 44, the first connection member 4 is ring-shaped, and when the connection protrusion 43 is separated from the connection groove 44, the first connection member 4 is strip-shaped or other unclosed shape. In other alternative embodiments, the connecting structure may take other forms, such as providing a connecting ring and a connecting hook at two ends respectively, hooking or separating the two to achieve two states of the first connecting member 4, or providing an adhesive structure at two ends, achieving two states of the first connecting member 4 by adhesion or adhesive separation, and so on. When the first fixing block 2 needs to be placed on the outer wall of the intestinal tissue 9, the first connecting member 4 and the first fixing block 2 can be placed into the abdominal cavity together as a whole, at this time, the first connecting member 4 is an unclosed ring or an elongated structure having two end portions, and after the first connecting member 4 is wound around the outer wall of the intestinal tissue 9, the two end portions of the first connecting member 4 are connected to each other to form a closed ring shape having a joint. The connection at the interface can be realized by clamping, connecting additional fixing pieces and the like.

As shown in fig. 3, the first bearing portion 41 and the first connecting portion 42 are integrally formed, and the first bearing portion 41 is a hollow annular structure surrounding the first fixing block 2, that is, the first bearing portion 41 is provided with a mounting hole, and the first fixing block 2 is embedded in the mounting hole. In order to more conveniently mount and remove the first fixing block 2 to and from the first connecting member 4, each side wall of the first fixing block 2, which is attached to the inner wall of the mounting hole, has a rounded corner 21 structure. In other alternative embodiments, the first bearing portion 41 may have other shapes, and may be formed separately from and fixedly connected to the first connecting portion 42. As shown in fig. 3, a circumferential first fixing block mounting groove 22 is at least partially formed on a side surface of the first fixing block 2, and the annular first bearing portion 41 is fitted into the first fixing block mounting groove 22. In another alternative embodiment, a circumferential first fixing block mounting groove may be at least partially formed inside an edge of the hollow annular structure of the first bearing portion 41, and a side surface of the first fixing block 2 is embedded in the first fixing block mounting groove, so that the first fixing block 2 and the first bearing portion 41 are stably connected.

As shown in fig. 6, the width w1 of the first bearing part 41 is greater than the width w2 of the first connecting part 42. From this, first bearing part 41 can bear the first fixed block 2 of width broad to realize the better fixed action of first fixed block 2 to protective sheath 1, and first connecting portion 42's width is less, can improve first connecting portion 42's elastic deformation ability, to intestinal tissue 9's wriggling influence greatly reduced. Further, the width w5 of the annular wall of the first bearing part 41 may be greater than the width w2 of the first connection part 42, so as to improve the connection stability of the first bearing part 41 and the first fixing block 2. In this embodiment, as shown in fig. 8, the thickness t1 of the first bearing part 41 and the thickness t2 of the first connecting part 42 are substantially equal. In another alternative embodiment, the thickness t1 of the first bearing part 41 may be greater than the thickness t2 of the first connecting part 42. Therefore, the first bearing part 41 can bear the first fixing block 2 with thicker thickness, so that the first fixing block 2 can be better fixed on the protective sleeve 1. In addition, the thickness of the first connecting portion 42 is small, and the elastic deformability of the first connecting portion 42 can be further improved. The thickness direction corresponds to the radial direction of the first connecting element 4 after forming the annular structure (corresponding to the radial direction of the protective sleeve 1).

In this embodiment, as shown in fig. 2, the second fixing member further comprises a second connecting member 5 for carrying the second fixing block 3, and when the second connecting member 5 is installed at the intestinal tract assembly 9, the second connecting member 5 surrounds the inner surface of the protective sheath 1 to form a connecting ring structure, so as to form a circumferential fixing for the protective sheath 1 together with the first fixing block 2. The second connecting piece 5 corresponds to the first connecting piece 4 in position, and forms a fixing ring for the protective sleeve 1. As shown in fig. 2, the second connecting member 5 includes a second bearing portion 51 and a second connecting portion 52. The second bearing portions 51 correspond to the second fixed blocks 3 one by one, and bear the corresponding second fixed blocks 3. The second connecting portion 52 is connected between two adjacent second bearing portions 51. When the second connecting piece 5 is arranged at the intestinal tract assembly 9, the second connecting piece 5 is circumferentially telescopic. Further, the second connecting member 5 may be an elastic connecting member, at least the second connecting portion 52 of which is elastic. Therefore, when the intestinal tract peristalsis, the second connecting piece 5 can elastically deform along with the peristalsis of the intestinal tract, the limiting pressure cannot be applied to the intestinal tract, and the telescopic movement space is provided for the intestinal tract. For example, the second connecting member 5 may be an elastic connecting member made of rubber, silicon rubber, or the like and having a certain elasticity. The second link 5 may be disposed in parallel to the support portion 11. The second connector 5 may be a closed ring structure or a connector with a connector, and when installed at the intestinal tract assembly 9, the connectors are connected end to form a connecting ring.

As shown in fig. 5, the second bearing portion 51 and the second connecting portion 52 are integrally formed, and the second bearing portion 51 is a hollow ring structure surrounding the second fixing block 3, that is, the second bearing portion 51 is provided with a mounting hole, and the second fixing block 3 is embedded in the mounting hole. In order to more conveniently mount and remove the second fixing block 3 to and from the second connector 5, each side wall of the second fixing block 3, which is attached to the inner wall of the mounting hole, has a rounded corner 31 structure. In other alternative embodiments, the second bearing portion 51 may have other shapes, and may be formed separately from and fixedly connected to the second connecting portion 52. As shown in fig. 5, a circumferential second fixed block mounting groove 32 is at least partially formed on a side surface of the second fixed block 3, and the annular second bearing portion 51 is inserted into the second fixed block mounting groove 32. In another alternative embodiment, a second fixed block circumferential second fixed block mounting groove may be at least partially disposed inside an edge of the hollow annular structure of the second bearing portion 51, and a side surface of the second fixed block 3 is embedded in the second fixed block mounting groove, so that the second fixed block 3 and the second bearing portion 51 are stably connected.

In this embodiment, the second connector 5 may also be integrally formed with the protective sheath 1. In an alternative embodiment, the second connecting member 5 may be formed separately from the protective sheath 1 and fixed thereto by gluing or the like. In another alternative embodiment, the second connecting element 5 may also be not fixed in the protective sheath 1 in advance, but rather may be placed in the corresponding position of the protective sheath 1 by the surgeon during the operation.

As shown in fig. 7, in this embodiment, the width w3 of the second bearing part 51 is greater than the width w4 of the second connecting part 52. From this, second bearing part 51 can bear the second fixed block 3 of width broad to realize the better fixed action of second fixed block 3 to protective sheath 1, and the width of second connecting portion 52 is less, can improve the elastic deformation ability of second connecting portion 52, to the peristaltic influence greatly reduced of intestinal tissue 9. Further, the width w6 of the annular wall of the second bearing part 51 may be greater than the width w4 of the second connecting part 42, so as to improve the stability of the connection between the second bearing part 51 and the second fixing block 3. In this embodiment, as shown in fig. 8, the thickness t3 of the second carrier part 51 and the thickness t4 of the second connecting part 52 are substantially equal. In another alternative embodiment, the thickness t3 of the second carrier part 51 may be greater than the thickness t4 of the second connecting part 52. Therefore, the second bearing part 51 can bear the second fixing block 3 with thicker thickness, so that the second fixing block 3 can be better fixed on the protective sleeve 1. In addition, the thickness of the second connection portion 52 is small, and the elastic deformability of the second connection portion 52 can be further improved.

As shown in fig. 9, it is a schematic view of the application of the anastomotic stoma protecting component of the second embodiment of the invention to the intestine component. In this embodiment, the first fixing part does not include the first connecting member therein, and the plurality of first fixing blocks 2 are spaced apart from each other and independent of each other. The second fixing part does not include the second connector therein, and the plurality of second fixing blocks 3 are spaced apart from each other and independent of each other. The position of the first fixed block 2 corresponds to the position of the second fixed block 3. During operation, the second fixing blocks 3 can be firstly fixed on the inner surface of the protective sleeve 1, and then the first fixing blocks 2 are placed at the positions corresponding to the second fixing blocks 3 one by one, so that the first fixing blocks 2 and the second fixing blocks 3 can be fixed relatively. This construction eliminates the need for the first connector structure and the assembly has fewer parts than the first embodiment. At the position where the first fixing block 2 is not arranged, the assembly does not apply any pressure to the tissue, and the normal blood supply of the anastomotic orifice is not affected. And when the intestinal tract tissue 9 peristalsis, the circumferential distance between the first fixing blocks 2 can freely increase or decrease along with the peristalsis of the intestinal tract tissue 9, namely, a circumferential telescopic space is also provided for the intestinal tract tissue 9.

As shown in fig. 10, the second fixing block 3 is matched with the protective sleeve 1 in the second embodiment. The inner surface of the protective sleeve 1 is further provided with mounting grooves corresponding to the second fixing blocks 3 one to one, so that the second fixing blocks 3 can be positioned on the inner surface of the protective sleeve 1 better. The second fixing block 3 is embedded in the corresponding mounting groove, so that the second fixing block 3 and the inner surface of the protective sleeve 1 can be detachably fixed. The mounting groove in fig. 10 is a recess 12 recessed outward on the surface of the protective cover 1. In an alternative embodiment, the mounting slot may also be a slot enclosed by a ring-shaped mounting element 13 protruding from the inner surface of the casing 1. The second fixing block 3 can be embedded in the mounting groove on the inner surface of the protective sleeve 1 in advance before operation, and then the protective sleeve 1 and the second fixing block 3 are integrally placed in the intestinal tract tissue 9. The second fixing block 3 may not be installed in advance, but the second fixing block 3 may be embedded in the corresponding installation groove during the operation. The second fixing block 3 and the mounting groove can be in interference fit.

In another alternative embodiment, the first fixing part may include the first fixing block 2 and the first connecting member 4, and the second fixing part may include only the second fixing block 3 without the second connecting member 5. In yet another alternative embodiment, the first fixing part may only include the first fixing block 2 and not the first connecting member 4, and the second fixing part may include the second fixing block 3 and the second connecting member 5.

As shown in fig. 11, it is a schematic view of the application of the anastomotic stoma protecting component of the third embodiment of the invention to the intestine component. In this embodiment, only the first fixing block 2 has the external magnetic particles 6 distributed therein, the second fixing block 3 may be made of a material which is not magnetic but can be attracted by a magnet, such as a magnetically attracting metal such as iron, nickel, cobalt, and the like, and the second fixing block 3 may also be made of a material which is magnetic, such as a magnet, and the like, and the magnetic property is opposite to the magnetic property of the external magnetic particles 6 of the first fixing block 2, and the magnetic attraction between the first fixing block 2 and the second fixing block 3 can be achieved, so that the protective sheath 1 can be fixed at a desired position.

As shown in fig. 12, it is a schematic view of the application of the anastomotic stoma protecting component of the fourth embodiment of the invention to the intestine component. In this embodiment, only the second fixing block 3 has the internal magnetic particles 7 distributed therein, the first fixing block 2 may be made of a material which is not magnetic by itself but can be attracted by a magnet, such as a magnetically attracting metal such as iron, nickel, cobalt, and the like, and the first fixing block 2 may also be made of a material which is magnetic by itself, such as a magnet, and the like, and the magnetic property is opposite to that of the internal magnetic particles 7 of the second fixing block 3, and the magnetic attraction between the first fixing block 2 and the second fixing block 3 can also be achieved, so as to fix the protective cover 1 at a desired position.

As shown in fig. 13, it is a schematic view of the application of the anastomotic stoma protecting component of the fifth embodiment of the invention to an intestinal tract component. In this embodiment, magnetic particles are distributed in a part of the first fixing block 2, and a material which is not magnetic but can be attracted by a magnet, such as a magnetically attractive metal, such as iron, nickel, cobalt, and alloys thereof, may be used in the first fixing block 2, or a material which is magnetic, such as a magnet, may be used. Similarly, magnetic particles are distributed in part of the second fixing block 3, and a material which is not magnetic but can be attracted by a magnet, such as a magnetically attractive metal, such as iron, nickel, cobalt, and alloys thereof, may be used in the second fixing block 3 in which the magnetic particles are not distributed, or a material which is magnetic, such as a magnet, may be used.

Fig. 14 is a schematic view illustrating an application of the anastomotic stoma protecting component according to the sixth embodiment of the invention to an intestinal tract component. In this embodiment, the first fixing component comprises a first fixing block 2 and a first connecting piece 4, the second fixing component comprises a second magnetic particle coating 33 formed by internal magnetic particles 7, and the second magnetic particle coating 33 is directly coated on the inner surface of the protective sleeve 1. The position of the first fixed block 2 corresponds to the position of the second magnetic particle coating 33. The first fixing block 2 may be coated with a first magnetic particle coating or doped with magnetic particles, or may be made of a material that is not magnetic but is attracted by a magnet, such as a magnetically attractive metal, such as iron, nickel, cobalt, and alloys thereof, or a material that is magnetic, such as a magnet. Therefore, the first fixing component and the second fixing component can also realize magnetic attraction, so that the protective sleeve 1 is fixed at a required position and the normal peristalsis of the intestinal tract and the blood supply around the tissues are not influenced.

As shown in fig. 15, it is a schematic view of the application of the anastomotic stoma protecting component of the seventh embodiment of the invention to the intestine component. In this embodiment, the first fixing member comprises a first connector 4 surrounding the outer wall of the intestinal assembly 9, the surface of the first connector 4 is coated with a third magnetic particle coating formed by external magnetic particles 6 or the interior of the first connector 4 is doped with external magnetic particles 6. The second fixing component may adopt the structure of the second fixing component in any of the above embodiments, that is, the structure of the second fixing block 3, or the structure of the second fixing block 3 plus the second connecting piece 5, or the structure of the second magnetic particle coating directly coated. The second fixing block 3 may be magnetic or non-magnetic, and when magnetic, may be a structure in which magnetic particles are distributed or a structure having magnetism itself. In addition, the second fixing component may also adopt a structure similar to the first fixing component in this embodiment, that is, the second fixing component includes a second connector 5 surrounding the outer wall of the intestinal assembly 9, the surface of the second connector 5 is coated with a fourth magnetic particle coating or the inside of the second connector 5 is doped with magnetic particles.

In another alternative embodiment, the second fixing element may also comprise a second connector 5 surrounding the outer wall of the enteric assembly 9, the surface of the second connector 5 being coated with a fourth magnetic particle coating or the interior of the second connector 5 being doped with magnetic particles. Meanwhile, the first fixing component may adopt the structure of the first fixing component in any of the above embodiments, that is, the structure of the first fixing block 2, or the structure of the first fixing block 2 plus the first connecting member 4. The first fixing block 2 may be magnetic or non-magnetic, and when magnetic, may be a structure in which magnetic particles are distributed or a structure having magnetism itself.

As shown in fig. 16, the installation and removal of the first connecting member 4 is facilitated. The first connector 4 may further be provided with a connecting structure, where the first connector 4 may be connected to encircle the outer wall of the intestinal tissue 9, e.g. forming a closed loop structure, or disconnected to detach from the outer wall of the intestinal tissue 9. The coupling structure shown in fig. 16 includes a coupling protrusion 43 and a coupling groove 44 respectively provided at both end portions, the first coupling member 4 has a ring shape when the coupling protrusion 43 is fitted into the coupling groove 44, and the first coupling member 4 has a bar shape or other non-closed shape when the coupling protrusion 43 is separated from the coupling groove 44. In other alternative embodiments, the connecting structure may take other forms, such as providing a connecting ring and a connecting hook at two ends respectively, hooking or separating the two to achieve two states of the first connecting member 4, or providing an adhesive structure at two ends, achieving two states of the first connecting member 4 by adhesion or adhesive separation, and so on.

Fig. 17 and 18 are schematic views illustrating the application of the anastomotic stoma protecting assembly according to the eighth embodiment and the ninth embodiment of the invention to an intestinal tract assembly, respectively. In both embodiments, the stoma protection assembly may be used for stoma protection in the upper intestinal tract. A first fixing component is arranged on the outer wall of the intestinal tract tissue 9 on the upstream side of the anastomotic stoma, a second fixing component is correspondingly arranged inside the protective sleeve 1, another first fixing component is arranged on the outer wall of the intestinal tract tissue 9 on the downstream side of the anastomotic stoma, and another second fixing component is correspondingly arranged inside the protective sleeve 1. The length of required protective sheath 1 can be saved greatly to this kind of structure on the one hand to more make things convenient for placing of protective sheath 1 and removing of protective sheath 1 after the anastomotic stoma resumes in the operation process, on the other hand can fix protective sheath 1 in required position better, guarantees the stability in the use. Two embodiments of the securing sock are shown in figures 17 and 18. In other alternative embodiments, the first fixing component and the second fixing component upstream of the anastomotic orifice may adopt the structure of the fixing component of any of the above embodiments, and all fall within the protection scope of the present invention.

The utility model provides a material of each embodiment of identical mouthful protection subassembly based on magnetic particle is the material that satisfies biocompatibility. In the above embodiments, one or more of the first fixing block 2, the second fixing block 3, the first connecting member 4 and the second connecting member 5 may be at least partially made of a bioabsorbable material, and may be naturally absorbed after a period of time in the human body without being manually removed after the operation. In the case where the first fixing block 2 is a magnetic fixing block, the first fixing block 2 may also be a bio-absorbable magnetic fixing block. In the case where the second fixing block 3 is a magnetic fixing block, the second fixing block 3 may also be a bio-absorbable magnetic fixing block. The first fixing block 2 and the second fixing block 3 may also be partially made of a bio-absorbable iron-based material. The first connecting member 4 may be made partially or entirely of a bioabsorbable material, such as a bioabsorbable medical film, and has flexibility or elasticity while ensuring a certain strength. Thereby eliminating the need for post-operative removal of the first connector 4. The second connecting member 5 may also be made of a bioabsorbable material, such as a bioabsorbable medical film, partially or entirely, and has flexibility or elasticity while ensuring a certain strength. Thereby eliminating the need for post-operative removal of the second connector 5.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A magnetic particle-based stoma protection assembly for stoma protection of tubular tissue, the assembly comprising:

2. The magnetic particle-based stoma protection assembly according to claim 1, wherein the first and second attraction portions are each distributed with magnetic particles, the magnetic particles in the first attraction portion are the same magnetic, the magnetic particles in the second attraction portion are the same magnetic, and the magnetic particles in the first and second attraction portions are opposite magnetic.

3. The magnetic particle-based stoma protection assembly according to claim 1, wherein the first attraction part is located corresponding to the second attraction part, and a corresponding set of the first attraction part and the second attraction part are both magnetic or one is magnetic and the other is not magnetic and can be attracted magnetically.

4. The magnetic particle-based stoma protection assembly according to claim 1, wherein the first fixation component includes a plurality of the first suction portions, the first suction portions being disposed at intervals from each other and distributed along a circumferential direction of the tubular tissue;

5. The magnetic particle-based stoma protection assembly according to claim 1, wherein the first suction part includes a first fixed block, a surface of which is coated with a first magnetic particle coating layer or an interior of which is doped with magnetic particles.

6. The magnetic particle-based stoma protection assembly according to claim 5, wherein the first fixation component further includes a first connector carrying the first fixation block, the first connector encircling the outer wall of the tubular tissue, the first connector being circumferentially retractable.

7. The magnetic particle-based stoma protection assembly according to claim 1, wherein the first fixation component includes a first connector surrounding an outer wall of the tubular tissue, the first connector having the first suction portion disposed therein, a surface of the first suction portion being coated with a third magnetic particle coating or an interior of the first connector being doped with magnetic particles.

8. The magnetic particle-based stoma protection assembly according to claim 6 or 7, wherein the first connection piece is provided with a connection structure, the first connection piece being connectable around the outer wall of the tubular tissue at the connection structure or disconnectable from the outer wall of the tubular tissue at the connection structure.

9. The magnetic particle-based stoma protection assembly according to claim 6 or 7, wherein the first connection piece is of a bioabsorbable material.

10. The magnetic particle-based stoma protection assembly according to claim 1, wherein the second attraction includes a second magnetic particle coating applied to an inner surface of the protective sheath.

11. The magnetic particle-based stoma protection assembly according to claim 1, wherein the second attraction part includes a second fixed block, a surface of which is coated with a second magnetic particle coating or an interior of which is doped with magnetic particles.

12. The magnetic particle-based stoma protection assembly according to claim 11, wherein the second fixation component further includes a second connector carrying the second fixation block, the second connector being located on an inner surface of the protective sheath.

13. The magnetic particle-based stoma protection assembly according to claim 1, wherein the second fixation component includes a second connector located at an outer wall of the tubular tissue, the second connector having the second attraction portion disposed therein, a surface of the second attraction portion being coated with a fourth magnetic particle coating or an interior of the second connector being doped with magnetic particles.

14. The magnetic particle-based stoma protection assembly according to claim 12 or 13, wherein the second connector is of a bioabsorbable material.

15. The magnetic particle-based stoma protection assembly according to claim 1, wherein the first and second fixation components are located on an upstream side of the stoma.

16. The magnetic particle-based stoma protection assembly according to claim 15, wherein a support portion is provided at an end of the protective sheath upstream of the stoma, the support portion being retractable in a radial direction of the protective sheath, the first and second fixation components being provided between the stoma and the support portion.

17. The magnetic particle-based stoma protection assembly according to claim 1, comprising two of the first and second fixation components, one of the first and second fixation components being disposed on an upstream side of the stoma, and the other of the first and second fixation components being disposed on a downstream side of the stoma.

18. The magnetic particle-based stoma protection assembly according to claim 1, wherein the first fixation component includes at least one first fixation block and/or the second fixation component includes at least one second fixation block;

19. The magnetic particle-based stoma protection assembly according to claim 18, wherein at least one of the first fixation block and/or at least one of the second fixation block employs a bioabsorbable magnetic material.

20. The magnetic particle-based stoma protection assembly according to claim 1, wherein the first fixation component includes at least one first fixation block and a first connector carrying the first fixation block; and/or the second fixing part comprises at least one second fixing block and a second connecting piece for bearing the second fixing block;